
import java.math.BigDecimal;



/**
 * @author Nizar
 *
 */
public abstract class BinExpr extends Expr {

	protected Expr leftExpr;
	protected Expr rightExpr;

	public BinExpr(Expr leftExpr, Expr rightExpr) {
		super();
		this.leftExpr = leftExpr;
		this.rightExpr = rightExpr;
	}

	@Override
	public BigDecimal evaluate(Env env)  {

		return null;
	}

	
	 public abstract String toString();

	

}
